body {
  height: 100%;
  width: 100%;
  margin: 0;
  overflow: hidden;
  padding: 0;
  background: #000;
}

#cesiumContainer{
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  margin: 0;
  overflow: hidden;
  padding: 0;
  font-family: sans-serif;
}